Lg Electronics Inc.

Jaewan Lee

Sangyoung Kwon

Sanghun Lee

Hyunjun Lim

Jonghwan Jeung

Kyomin Koo

Hongjae Lim

An outdoor device of an air conditioner is provided and may include a top cover that forms an upper surface of the outdoor device and provided with at least one discharge port through which air may be discharged, at least one fan provided under the top cover, and at least one shroud that accommodates the fan and that connects with the discharge port. A transverse width of the at least one shroud that passes through side surfaces of the at least one shroud and the at least one fan may be constant from an inlet port of the shroud to an outlet part. A cross sectional area of the outlet port may gradually increase toward the at least one discharge port.

Outdoor device of an air conditioner

An outdoor device for an air conditioner is provided that may include a compressor, a flow switch provided at an outlet-side of the compressor to switch a flow direction of a refrigerant according to a cooling operation or a heating operation, and an outdoor heat exchanger connected to the flow switch. The outdoor heat exchanger may include first to third heat exchangers, each of which may include a refrigerant tube through which the refrigerant may flow, the first to third heat exchangers being connected to each other in parallel during a heating operation and in series during a cooling operation, a first branch that branches the refrigerant into a first distribution tube, which may be directed to the first and second heat exchangers, and a second distribution tube which may be directed to the third heat exchanger, a second branch that branches the refrigerant branched from the first branch into a first branch tube, which may be directed to the first heat exchanger and a second branch tube, which may be directed to the second heat exchanger, and a first valve provided in the first distribution tube.

Outdoor device for an air conditioner

An air conditioner may have a structure in which a snowfall detection device is attached to a grill and a case, and an amount of snow accumulated on the grill is detected in a non-contact manner to control an operation of the air conditioner. The snowfall may be more stably and reliably detected, and also the air conditioner may more stably and reliably operated.

Air conditioner and method for controlling the same

An air conditioner and a method of controlling an air conditioner are provided. The method of controlling an air conditioner may include determining whether a low-load condition is satisfied on the basis of a number of indoor devices or a temperature of external air, performing a low-load operation of a compressor at a predetermined frequency when the low-load condition is satisfied, detecting whether an operation pressure is out of a target pressure value or range while the low-load operation is performed, and bypassing a refrigerant from the compressor to a gas/liquid separator via an injection passage when the operation pressure is out of the target pressure value or range.

Air conditioner and method of controlling an air conditioner

An air conditioner may include a plurality of indoor units and a plurality of outdoor units connected to the plurality of indoor units. Each of the plurality of outdoor units may include a plurality of outdoor heat exchangers. Each of the outdoor heat exchangers may include a plurality of heat exchanger parts. When a defrosting operation condition is satisfied during a heating operation, indicating that a defrosting operation should be performed the plurality of heat exchanger parts of the plurality of outdoor heat exchangers may successively perform the defrosting operation.

Air conditioner and method of controlling the same

A multi type air conditioner may include an outdoor unit, a distributor connected to the outdoor unit, and a plurality of indoor units connected to the distributor. The distributor may include a plurality of pipe ports. Two or more of the indoor units may be connected to one or more of the pipe ports to form an indoor unit group. An operation mode of the two or more indoor units forming the indoor unit group may operate in a reference mode that corresponds to an operation mode of a main indoor unit or an appropriate pipe port.

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Seoul, South Korea

Jaewan Lee